So I've been having some trouble with my desktop for a while now. I use it for gaming and during graphics intensive games, often the whole computer will shut down without warning or an error screen of any kind. After it shuts down, it won't turn back on unless I reset the switch on the power supply.

Now, that said, I've run said games while monitoring the CPU temperature and it stayed within 58-62*C the entire time, up until the computer shut off again. I'm starting to think that the power supply is failing but I'm not entirely certain. Any thoughts?

Hardware:

Intel i5 3300 @ 3.00 GHz
8gb DDR3
EVGA GeForce GTX 960
Corsair CX750M